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[The following information applies to the questions displayed below.] L. A. and Paula file as married taxpayers. In August of this year, they received a $6,920 refund of state income taxes that they paid last year. How much of the refund, if any, must L. A. and Paula include in gross income under the following independent scenarios? Assume the standard deduction last year was $12,600. (Leave no answer blank. Enter zero if applicable.)

a. Last year L. A. and Paula had itemized deductions of $10,720, and they chose to claim the standard deduction.

b. Last year L. A. and Paula claimed itemized deductions of $25,700. Their itemized deductions included state income taxes paid of $7,600.

c. Last year L. A. and Paula claimed itemized deductions of $17,450. Their itemized deductions included state income taxes paid of $12,650.